Calendar



FIG. 1 is a front elevational view of a calendar showing my new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof; and,

FIG. 6 is a bottom plan view thereof.

The two irregular circles shown on the central support feature in FIG. 4 are cut-away openings. 

The ornamental design for a calendar, substantially as shown and described. 